EP2793786B1 - Produit absorbant jetable doté de régions d'ouvertures élastiques pour les jambes et procédés associés - Google Patents

Produit absorbant jetable doté de régions d'ouvertures élastiques pour les jambes et procédés associés Download PDF

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Publication number
EP2793786B1
EP2793786B1 EP12809263.2A EP12809263A EP2793786B1 EP 2793786 B1 EP2793786 B1 EP 2793786B1 EP 12809263 A EP12809263 A EP 12809263A EP 2793786 B1 EP2793786 B1 EP 2793786B1
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EP
European Patent Office
Prior art keywords
backsheet
absorbent product
stretch material
wearer
multidirectional stretch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP12809263.2A
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German (de)
English (en)
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EP2793786A1 (fr
Inventor
Frank Steven Glaug
Joshua Daniel CARNEY
Sue Uner
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Essity Hygiene and Health AB
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Essity Hygiene and Health AB
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Publication of EP2793786A1 publication Critical patent/EP2793786A1/fr
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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/49017—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means being located at the crotch region
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/49019—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means being placed longitudinally, transversely or diagonally over the article
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/4902—Form-fitting, self-adjusting disposable diapers with elastic means characterised by the elastic material
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49058—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by the modular concept of constructing the diaper

Definitions

  • the present invention is generally related to absorbent products and, more particularly, to disposable absorbent products that are worn by humans for the containment and absorption of fluid bodily secretions.
  • Disposable absorbent products for absorption of bodily fluids are available in different types, designs, and dimensions.
  • training pants, baby diapers, adult diapers, and incontinence guards are products designed for the containment of urine and excrement.
  • disposable absorbent articles such as feminine hygiene products (e.g., heavy and light incontinence pads, pantiliners) that are designed to contain and absorb urine and/or menses secreted by female wearers.
  • Known products of this type typically include a topsheet facing the body of the wearer, a backsheet facing the garment worn by the wearer, and an absorbent core sandwiched between the topsheet and backsheet.
  • the absorbent core may have a rectangular shape, or some other shape chosen to provide sufficient absorption for the fluids secreted by the wearer. But many of those products, especially those intended to contain urine,
  • a disposable absorbent product that extends along a longitudinal dimension and a width dimension.
  • the absorbent product has a backsheet, a topsheet overlaying the backsheet, and an absorbent core that is disposed between the backsheet and the topsheet for absorbing and retaining fluid secreted by a wearer of the absorbent product.
  • the absorbent product also has a multidirectional stretch material layer, adjacent the backsheet, that defines a first and second contoured leg openings of the absorbent product adapted to fit around respective legs of the wearer of the absorbent product.
  • An impermeable barrier layer is disposed between said absorbent core and said backsheet and is adapted to prevent the flow of fluid from said absorbent core to said first multidirectional stretch material layer.
  • the backsheet, the multidirectional stretch material layer, and the impermeable barrier layer are separate elements.
  • the barrier layer is secured to the backsheet and to the multidirectional stretch material layer.
  • the backsheet comprises two backsheet sections spaced from one another in the longitudinal dimension of the absorbent product, the multidirectional stretch material layer longitudinally spanning between said two backsheet sections.
  • a disposable absorbent product extending along a longitudinal dimension and a width dimension, the absorbent product comprises a backsheet, a topsheet overlaying said backsheet, an absorbent core disposed between said backsheet and said topsheet for absorbing and retaining fluid secreted by a wearer of the absorbent product; and first and second multidirectional stretch material layers spaced from one another in a lateral direction.
  • Each multidirectional stretch material layer defines a corresponding contoured leg opening of the absorbent product adapted to fit around respective legs of the wearer of the absorbent product.
  • An impermeable barrier layer is disposed between said absorbent core and said backsheet and is adapted to prevent the flow of fluid from said absorbent core to said first multidirectional stretch material layer; the backsheet, the first and second multidirectional stretch material layers, and the impermeable barrier layer are separate elements; the barrier layer being secured to the backsheet and to the first and second multidirectional stretch material layers.
  • the backsheet comprises two backsheet sections spaced from one another in the longitudinal dimension of the absorbent product and secured to the first and second multidirectional stretch material layers, said first multidirectional stretch material layer longitudinally spanning between said two backsheet sections.
  • the disposable absorbent product has a pair of elastic strands spaced from one another in the width dimension of the absorbent product, secured to the barrier layer, and each of which has a length that is less than the length of the absorbent core.
  • the elastic strands may be free of contact with the first multidirectional stretch material layer.
  • the topsheet may be longitudinally shorter than an overall length of the absorbent product.
  • the absorbent core may include a pair of arm portions and a pair of leg portions, with the arm and leg portions protruding laterally from a central portion of the absorbent core.
  • the topsheet and backsheet may jointly define an interior face of the disposable absorbent product adapted to face the body of the wearer during use, and an exterior face adapted to face away from the wearer during use, with the interior face having a total surface area, and with the absorbent core occupying a surface area equal to or greater than about 50% of the total surface area of the interior face.
  • FIGS. 1 , 2 , 3 , 4A , 4B , and 4C an exemplary disposable absorbent product in the form of a disposable pant 10, such as a training pant or an adult-size disposable pant, is illustrated. While these and other figures refer to a disposable pant, it is contemplated that the description herein and accompanying figures are applicable to other types of disposable absorbent products, and therefore not limited to disposable pants.
  • the pant 10 is shown in its final, ready-to-use condition in FIG. 1 , and shown in an open condition in FIG. 2 , for illustration purposes.
  • Pant 10 has an interior 10a that faces the body of the wearer (not shown), and an exterior 10b that faces away from the body of the wearer.
  • a waist opening 10c, as well as a pair of leg openings 10d, jointly permit the mounting of pant 10 onto the body of the wearer, in ways known to those of ordinary skill in the art.
  • the pant 10 extends laterally (i.e., in the width dimension) along an orthogonal axis 10x and longitudinally along a longitudinal axis 10y.
  • the perimeter of the pant 10 includes a pair of longitudinal ends 12, 14, a first pair of side edges 16, 18 on one side of the longitudinal axis 10y, and a second pair of side edges 20, 22 on the opposite side of longitudinal axis 10y.
  • the perimeter of pant 10 also includes a first contoured leg opening 24 extending between the side edges 16, 18, and a second contoured leg opening 26 extending between the side edges 20, 22.
  • the term "contoured" refers to the generally curved shape of the leg openings 24, 26, designed to generally conform about the respective legs of the wearer.
  • contoured leg openings are contemplated having a single, continuous curve, as in the exemplary leg openings 24, 26 of the figures herein, or having other partially or entirely curved shapes.
  • the confronting side edges 16, 18 are integral with one another, as are the confronting side edges 20, 22, so as to define the closed pant 10 shown in FIG. 1 . More specifically, the juncture of the side edges 16, 18 defines a first side seam 30 of pant 10, and the juncture of the side edges 20, 22 defines a second side seam 32.
  • the pant 10 has an interior face 40 and an exterior face 42 respectively defining the interior 10a and exterior 10b of the pant 10 in its ready-to-use condition ( FIG. 1 ).
  • a topsheet 44 made of a permeable, hydrophilic nonwoven material defines at least a portion of the interior face 40. More specifically in the exemplary embodiment of FIG. 3 , the topsheet 44 is a substrate layer longitudinally shorter than the overall length L of the pant 10. It is contemplated, however, that the topsheet 44 may instead have substantially the same length as the overall length L of the pant 10, or be even longer than the length L (i.e., folded at one or both longitudinal ends) and still fall within the scope of the present disclosure.
  • a suitable topsheet material is a spunbond polypropylene (“SBPP”) nonwoven commercially available from Polymer Group Inc (“PGI”) of Charlotte, North Carolina (USA).
  • An outer cover or backsheet 48 made of a hydrophobic material, defines at least a portion of the exterior face 42. More specifically according to the invention in the embodiment of FIG. 3 , the backsheet 48 is a substrate layer made up of two backsheet sections 48a, 48b, that are spaced from one another in the longitudinal direction. It is contemplated, however, that the backsheet 48 may alternatively be a single structure rather than having two or more separate structures, and still fall within the scope of the present disclosure.
  • a material suitable for backsheet 48 is a breathable, high basis weight nonwoven, such as a spunbond/meltblown/spunbond ("SMS”) polypropylene nonwoven commercially available under the designation S-S70-26 from Avgol Nonwoven Industries, of Tel-Aviv, Israel.
  • SMS spunbond/meltblown/spunbond
  • breathable refers to nonwoven fabrics having an air permeability of at least about 2800 l/m 2 /sec under the WSP 70.1 test method (by Worldwide Strategic Partners).
  • high basis weight refers to nonwoven fabrics having a basis weight of at least about 10 g/m 2 .
  • Pant 10 also includes an absorbent core 50, made of fluff pulp or a combination of fluff pulp or some other natural or synthetic fluid management material, and a fluid storage material such as superabsorbent material ("SAP") or some other natural or synthetic fluid storage material.
  • SAP superabsorbent material
  • the absorbent core 50 is positioned in pant 10 so as to extend along the same longitudinal axis 10y of the pant 10, and is located in the space between the topsheet 44 and backsheet 48, and is configured to absorb, distribute, and/or store bodily fluids e.g., urine, secreted by the wearer of the pant 10.
  • Other absorption components may be present as well. In the embodiment illustrated in FIG.
  • the pant 10 includes an acquisition layer 52 and an airlaid layer 54, both of which aid in the acquisition, distribution, and/or directing of fluid to the absorbent core 50.
  • a suitable absorption component structure is an acquisition layer / airlaid layer composite commercially available from Glatfelter Falkenhagen GmbH, of Falkenhagen, Germany.
  • each of the exemplary absorption components 52, 54 is generally rectangular and extends laterally and longitudinally to an extent less than the corresponding width and length dimensions of the absorbent core 50.
  • the shapes and dimensions of the exemplary components 52, 54 can be different from those shown in the FIGS. 2 and 4A-4C , so long as they cooperate with the absorbing function of the absorbent core 50 in the management of fluids secreted by the wearer, particularly urine.
  • the pant 10 also includes an impermeable barrier layer 58 made of polyethylene or polypropylene, for example, and located between the backsheet 48 and the absorbent core 50.
  • the barrier layer 58 prevents fluid from flowing from the absorbent core 50 to the backsheet 48, which in certain embodiments may be made of a permeable material, such as a cloth-like nonwoven material.
  • FIG. 3 illustrates various adhesive components, applied in a suitable chosen pattern, that secure the various layers making up pant 10.
  • adhesive component 60 secures the topsheet 44 to the acquisition layer 52 and to the barrier layer 58.
  • Adhesive components 62 and 63 respectively secure the airlaid layer 54 to the absorbent core 50 and the absorbent core 50 to the barrier layer 58.
  • An adhesive component 64 secures the barrier layer 58 to the backsheet portions 48a, 48b making up the backsheet 48, and to a multidirectional stretch material layer 69 adjacent the backsheet 48, that defines a portion of the exterior face 42 of pant 10.
  • adhesive components 72 secure the longitudinal ends of the multidirectional stretch material layer 69 to the backsheet portions 48a, 48b. Other aspects of multidirectional stretch material layer 69 are explained more fully below.
  • pant 10 While the above description and the figures refer to adhesive components securing different structural components (e.g., substrate layers) of the pant 10 to one another, these are intended to be exemplary rather than limiting. More specifically, it is contemplated that two or more of the structural components of pant 10 may instead or in addition be secured to one another mechanically, for example through ultrasonic bonding, CPW bonding, or heat bonding.
  • each of the pants 10, 90 includes a pair of elastic strands 73, spaced laterally from one another, and secured against the front surface of the barrier layer 58 in a pre-stretched condition, so as to allow the pant 10, 90 to gather longitudinally in the crotch area when in the ready-to-use condition ( FIG. 1 ).
  • the elastic strands 73 are free of contact with the multidirectional stretch material layer 69, by virtue of being secured to the front surface of the barrier layer 58.
  • the elastic strands 73 extend longitudinally a relatively short distance, and are substantially located only in the crotch area of the pant 10, 90.
  • the elastic strands 73 are shorter than the overall length L ( FIG. 3 ) of the pant 10, 90 and also shorter than the length M ( FIG. 3 ) of the absorbent core 50.
  • the elastic strands 73 are located outboard of the central crotch portion of the absorbent core 50, as best seen in FIG. 2 .
  • the relative dimensions and location of the elastic strands 73 enhance the fit and comfort of the pant 10, 90 on the wearer, while also enhancing the prevention of leakage in the crotch area.
  • a suitable type of elastic strands is Lycra ® strands, commercially available from Invista North America, of Wichita, Kansas (USA).
  • Pant 10 also includes a pair of elastic bands 76, 78, located at the longitudinal ends of pant 10, and respectively defining the front and back waist regions.
  • Each of the elastic bands 76, 78 is free of exposure to the wearer. More specifically, each of the elastic bands 76, 78 is encased by a respective folded-upon-itself portion at the longitudinal ends of the backsheet portions 48a, 48b.
  • the elastic bands 48a, 48b may be made of natural or synthetic rubber or some other natural or synthetic material. Exemplary materials for the elastic bands are commercially available from Fulflex ® Elastomerics Worldwide, of Brattleboro, Vermont (USA).
  • the elastic bands 48a, 48b that are contemplated are generally flat structures, having a suitably chosen width that provides the pant 10 with an underwear-like appearance.
  • the elastic bands 48a, 48b may have a width, for example and without limitation, in the range of from about 10mm to about 50mm.
  • the multidirectional stretch material layer 69 shown therein is a structure spanning across and defining both of the contoured leg openings 24, 26 of pant 10.
  • the lateral edges of the layer 69 are shaped so as to conform to the respective legs of the wearer.
  • the multidirectional stretch material layer 69 is a hydrophobic material, having stretch characteristics in more than one direction, so as to more effectively conform to the legs of the wearer.
  • the high level of conformance of the pant 10 around the legs of the wearer facilitates the prevention or at least reduction in the amount of fluid leakage observed with conventional disposable absorbent products. This contrasts with conventional disposable absorbent products having thin elastic strands at or near the leg openings, in which the leg openings stretch in only one direction by virtue of the elongation direction of the elastic strands.
  • the multidirectional stretch material layer 69 is secured to other portions of the pant 10, such as the backsheet portions 48a, 48b, in a pre-stretched (i.e., strained) condition. To that end, the material 69 may be stretched in one or more directions and secured, in that condition, to the backsheet portions 48a, 48b and/or to the barrier layer 58.
  • An exemplary material suitable for the multidirectional stretch material layer 69 is a trilaminate commercially available under the trade name Flexaire TM 402, available from the Tredegar Corporation, of Richmond, Virginia (USA).
  • Suitable materials include a nylon mesh or other materials capable of stretching in more than one direction to at least about 150% of the original dimension in the direction of the applied stretching force, and which can then retract to a dimension no greater than about 120% of the original dimension, in the direction of the applied stretching force.
  • a multidirectional stretch material layer 69 is chosen having a color that is different from the rest of the pant 10, so as enhance the appeal of the pant 10 to the wearer and to provide a signal to the wearer of the presence of a multidirectional stretch feature in the pant 10.
  • Table 1 sets forth force vs. elongation data, in two directions orthogonal to one another, for an exemplary nylon mesh material that has been found to be suitable for the layer 69 of multidirectional stretch material described herein.
  • Table 1 Force vs. Elongation for Exemplary Nylon Mesh % Elongation Load (N) Load (N) First Direction Second Direction 25 0.14 0.10 50 0.23 0.18 75 0.30 0.27 100 0.39 0.36 125 0.47 0.45 150 0.54 0.53 175 0.60 0.62 200 0.67 0.70
  • an exemplary multidirectional stretch material suitable for the layer 69 is capable of stretching in either direction by 100% under an applied stretching force of about 0.36 to about 0.39 N.
  • this exemplary material is capable of stretching in either direction by 150% under an applied stretching force of about 0.53 to about 0.54 N, and capable of stretching by 200% under an applied stretching force of about 0.67 to about 0.70 N.
  • FIG. 4B illustrates a different embodiment of a pant 90, similar in most respects to the pant 10 of the preceding figures.
  • Pant 90 includes two multidirectional stretch material layers 69a, 69b, secured to both backsheet portions 48a, 48b and to the barrier layer 58, and spaced from one another in the lateral direction i.e., along the width dimension.
  • the multidirectional stretch material layer 69a defines the contoured leg opening 24, while the other multidirectional stretch material layer 69b defines the other contoured leg opening 26.
  • This embodiment is configured to use less multidirectional stretch material than the embodiment of FIG. 4A , which may be desirable.
  • FIG. 4C that figure illustrates an embodiment of a pant 110 similar to the pant 10 of FIG. 4A .
  • Pant 110 has a single-structure backsheet 148, spanning the entire length of the pant 110. This contrasts with pant 10 of FIG. 4A , in which the backsheet 48 is made up of two longitudinally-spaced backsheet portions 48a, 48b.
  • the embodiment of FIG. 4A is configured to use less backsheet material than the embodiment of FIG. 4A , which may be desirable.
  • the absorbent core 50 is designed to maximize the absorbent capacity of the pant 10, 90, 110, and to prevent or at least reduce leakage of fluid e.g., urine, secreted by the wearer. More specifically, the absorbent core 50 is a symmetrical structure having a central portion 120, a pair of arm portions 122 extending along respective minor axes 122a, and a pair of leg portions 124 extending along respective minor axes 124a. Each of a pair of concave, arcuate lateral edges 135 of absorbent core 50 match respective ones of the leg openings 24, 26, as best seen in FIG.
  • each of those lateral edges 135 being located entirely on one side of the longitudinal axis 10y, and extending between one of the arm portions 122 and one of the leg portions 124.
  • the orientation of each of the arm and leg portions 122, 124 is such that each protrudes laterally and longitudinally from the central portion 120.
  • each of the respective minor axes 122a, 124a is angled i.e., it defines an acute or obtuse angle relative to the longitudinal axis 10y of the pant 10, 90, 110.
  • the leg portions 124 are proximate the front waist portion of the pant 10, 90, 110 i.e., the region of the pant 10, 90, 110 that is intended, in use, to face the front waist of the wearer.
  • the arm portions 122 are proximate the back waist portion of the pant 10, 90, 110 i.e., the region of the pant 10, 90, 110 that is intended, in use, to face the back waist of the wearer.
  • the exemplary absorbent core 50 further includes a terminal portion 126 protruding longitudinally from a remainder of the absorbent core 50 and located centrally in the width dimension between the arm portions 122.
  • the terminal portion 126 is located proximate the back waist portion of the pant 10, 90, 110, which prevents or at least reduces leakage of fluid through the back waist of the wearer.
  • the illustrated embodiment also has a concave, arcuate terminal edge 137, located longitudinally opposite from the terminal portion 126, extending between the leg portions 124, and which is shaped so as to enhance comfort and fit on the wearer.
  • protruding terminal portion similar to terminal portion 126, extending longitudinally from the remainder of the absorbent core 50, but located in the front waist portion of the pant 10, 90, 110 i.e., in place of the concave terminal edge 137 of the exemplary absorbent core 50.
  • the protruding terminal portion in the front waist portion of the pant 10, 90, 110 enhances the prevention or reduction of leakage through the front waist of the wearer, which may be especially desirable for male wearers.
  • the arm and leg portions 122, 124 extend the coverage of the absorbent core along the leg openings 24, 26, which enhances the prevention or at least the reduction of leakage of fluid (e.g., urine) secreted by the wearer through areas adjacent the legs of the wearer.
  • fluid e.g., urine
  • the multidirectional stretch layer(s) of the pant 10, 90, 110 also enhances the protection against leakage.
  • the high level of conformance of the multidirectional stretch layer(s) to the legs of the wearer prevent the escape of fluid along the surfaces of the legs of the wearer, while the relatively large coverage of absorbent core 50 adjacent the leg openings 24, 26 allows the pant 10, 90, 110 to absorb fluid that would otherwise tend to leak.
  • the large coverage provided by the absorbent core 50 in specific embodiments is such that the ratio of surface area of the absorbent core to the total surface area of the pant 10, 90, 110, measured as the pant 10, 90, 110 is in the open condition ( FIGS. 2 and 7 ), is of at least about 50%. In certain embodiments, that ratio is greater than about 55%.
  • an absorbent core 50 that forms part of a disposable absorbent product such as pant 10, 90, 110
  • the structures described therein can be used to manufacture only absorbent cores, rather than full disposable absorbent products. More specifically, embodiments are contemplated consisting of a core insert manufactured in one location and which is then supplied to another manufacturing location or to a consumer, in the form of an absorbent core insert, to be used with a disposable absorbent product or even with a non-disposable absorbent product (e.g., underwear or brief).
  • FIG. 8 that figure illustrates another exemplary embodiment of a disposable absorbent product in the form of an open diaper or brief 150.
  • like reference numerals in FIG. 6 refer to similar features in the preceding figures, the details and description of which may be referred to as well for an understanding of the structure and functionality of diaper 150.
  • diaper 150 the front and back portions thereof are secured to one another on the wearer through a fastening component, such as an adhesive or hook-and-loop type fastener 155, that can be secured directly onto the outer surface of the backsheet 48, or alternatively secured to a "landing zone" (not shown) feature that is in turn attached to the backsheet 48.
  • Other features of diaper 150 are similar in most respects to the various features described above with respect to the embodiments of FIGS. 1-3 , 4A-4C , and 5 .

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Claims (10)

  1. Produit absorbant jetable (10) s'étendant le long d'une dimension longitudinale et d'une dimension de largeur, le produit absorbant comprenant :
    une feuille arrière (48) ;
    une feuille supérieure (44) recouvrant ladite feuille arrière ;
    une âme absorbante (50) disposée entre ladite feuille arrière et ladite feuille supérieure pour absorber et retenir du fluide sécrété par un porteur du produit absorbant ; et
    une couche de matériau extensible de manière multidirectionnelle (69) adjacente à ladite feuille arrière (48) et définissant des première et deuxième ouvertures de jambe profilées (24, 26) du produit absorbant adaptées pour s'ajuster autour des jambes respectives du porteur du produit absorbant,
    dans lequel une couche barrière imperméable (58) est disposée entre ladite âme absorbante (50) et ladite feuille arrière (48) et est adaptée pour empêcher l'écoulement de fluide de ladite âme absorbante vers ladite première couche de matériau extensible de manière multidirectionnelle ;
    dans lequel la feuille arrière (48), la couche de matériau extensible de manière multidirectionnelle (69) et la couche barrière imperméable (58) sont des éléments séparés ; la couche barrière (58) étant fixée à la feuille arrière (48) et à la couche de matériau extensible de manière multidirectionnelle (69) ;
    caractérisé en ce que
    ladite feuille arrière (48) comprend deux sections de feuille arrière (48a, 48b) espacées l'une de l'autre dans la dimension longitudinale du produit absorbant, ladite couche de matériau extensible de manière multidirectionnelle (69) s'étendant longitudinalement entre lesdites deux sections de feuille arrière (48a, 48b).
  2. Produit absorbant jetable (90) s'étendant le long d'une dimension longitudinale et d'une dimension de largeur, le produit absorbant comprenant :
    une feuille arrière (48) ;
    une feuille supérieure (44) recouvrant ladite feuille arrière ;
    une âme absorbante (50) disposée entre ladite feuille arrière et ladite feuille supérieure pour absorber et retenir du fluide sécrété par un porteur du produit absorbant ; et
    des première et deuxième couches de matériau extensible de manière multidirectionnelle (69a, 69b) espacées l'une de l'autre dans une direction latérale ; chaque couche de matériau extensible de manière multidirectionnelle (69a, 69b) définissant une ouverture de jambe profilée correspondante (24, 26) du produit absorbant adaptée pour s'ajuster autour des jambes respectives du porteur du produit absorbant,
    dans lequel une couche barrière imperméable (58) est disposée entre ladite âme absorbante (50) et ladite feuille arrière (48) et est adaptée pour empêcher l'écoulement de fluide de ladite âme absorbante vers ladite première couche de matériau extensible de manière multidirectionnelle ;
    dans lequel la feuille arrière (48), les première et deuxième couches de matériau extensible de manière multidirectionnelle (69a, 69b) et la couche barrière imperméable (58) sont des éléments séparés ; la couche barrière (58) étant fixée à la feuille arrière (48) et aux première et deuxième couches de matériau extensible de manière multidirectionnelle (69a, 69b) ;
    caractérisé en ce que
    ladite feuille arrière (48) comprend deux sections de feuille arrière (48a, 48b) espacées l'une de l'autre dans la dimension longitudinale du produit absorbant et fixées aux première et deuxième couches de matériau extensible de manière multidirectionnelle (69a, 69b), ladite première couche de matériau extensible de manière multidirectionnelle (69) s'étendant longitudinalement entre lesdites deux sections de feuille arrière (48a, 48b).
  3. Produit absorbant jetable (10, 90) selon la revendication 1 ou 2, comprenant en outre :
    des première et deuxième bandes élastiques (76, 78) disposées aux extrémités longitudinales respectives (14, 12) du produit absorbant et adaptées pour se conformer autour de la taille du porteur du produit absorbant.
  4. Produit absorbant jetable (10, 90) selon l'une quelconque des revendications 1 à 3, dans lequel ladite feuille arrière (48) présente des première et deuxième extrémités longitudinales (14, 12), chacune pliée sur elle-même de manière à enfermer respectivement lesdites première et deuxième bandes élastiques (76, 78).
  5. Produit absorbant jetable (10, 90) selon l'une quelconque des revendications 1 à 4, comprenant en outre une paire de fils élastiques (73) espacés l'un de l'autre dans la dimension de largeur du produit absorbant, fixés à ladite couche barrière (58), et présentant une longueur inférieure à la longueur de ladite âme absorbante (50).
  6. Produit absorbant jetable (10, 90, 110) selon la revendication 5, dans lequel lesdits fils élastiques (73) ne sont pas en contact avec ladite première couche de matériau extensible de manière multidirectionnelle (69).
  7. Produit absorbant jetable (10, 90, 110) selon l'une quelconque des revendications 1 à 6, dans lequel ladite feuille supérieure (44) est longitudinalement plus courte que la longueur totale du produit absorbant.
  8. Produit absorbant jetable (10, 90, 110) selon l'une quelconque des revendications 6 et 7, dans lequel lesdits fils élastiques (73) sont situés dans une zone d'entrejambe du produit absorbant jetable.
  9. Produit absorbant jetable (10, 90, 110) selon l'une quelconque des revendications 1 à 8, dans lequel ladite âme absorbante (50) comprend une paire de parties de bras (122) et une paire de parties de jambe (124), lesdites parties de bras et de jambe faisant saillie latéralement à partir d'une partie centrale (120) de ladite âme absorbante (50).
  10. Produit absorbant jetable (10, 90, 110) selon l'une quelconque des revendications 1 à 9, dans lequel :
    lesdites feuille supérieur (44) et feuille arrière (48) définissent conjointement une face intérieure (40) dudit produit absorbant jetable adaptée pour faire face au corps du porteur pendant l'utilisation, et une face extérieure (42) de celui-ci adaptée pour être opposée au porteur pendant l'utilisation,
    ladite face intérieure présente une surface totale, et
    ladite âme absorbante (50) occupe une surface égale ou supérieure à environ 50 % de ladite surface totale de ladite face intérieure (40).
EP12809263.2A 2011-12-23 2012-12-19 Produit absorbant jetable doté de régions d'ouvertures élastiques pour les jambes et procédés associés Active EP2793786B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13/336,731 US9289331B2 (en) 2011-12-23 2011-12-23 Disposable absorbent product with elastic leg opening regions and related methods
PCT/EP2012/076138 WO2013092704A1 (fr) 2011-12-23 2012-12-19 Produit absorbant jetable doté de régions d'ouvertures élastiques pour les jambes et procédés associés

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EP2793786A1 EP2793786A1 (fr) 2014-10-29
EP2793786B1 true EP2793786B1 (fr) 2024-03-06

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US (1) US9289331B2 (fr)
EP (1) EP2793786B1 (fr)
JP (1) JP6037348B2 (fr)
CN (1) CN104093386B (fr)
AU (1) AU2012357740B9 (fr)
BR (1) BR112014015092B1 (fr)
CO (1) CO7000760A2 (fr)
RU (1) RU2585709C2 (fr)
WO (1) WO2013092704A1 (fr)

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EP3294246B1 (fr) * 2015-05-11 2022-11-02 Essity Hygiene and Health Aktiebolag Article absorbant sous forme de culotte, tel qu'une couche culotte, une culotte hygiénique ou une culotte d'incontinence
CN106618874B (zh) * 2015-10-31 2021-08-03 金王(苏州工业园区)卫生用品有限公司 防侧漏吸收制品
USD841800S1 (en) * 2016-11-08 2019-02-26 Aili Saadia Disposable diaper with integral pockets

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Also Published As

Publication number Publication date
CN104093386B (zh) 2017-02-22
EP2793786A1 (fr) 2014-10-29
JP6037348B2 (ja) 2016-12-07
AU2012357740B9 (en) 2015-07-30
US9289331B2 (en) 2016-03-22
BR112014015092A2 (pt) 2017-06-13
US20130165890A1 (en) 2013-06-27
AU2012357740A1 (en) 2014-07-17
BR112014015092B1 (pt) 2021-08-31
BR112014015092A8 (pt) 2017-07-04
RU2585709C2 (ru) 2016-06-10
AU2012357740B2 (en) 2015-03-26
JP2015502228A (ja) 2015-01-22
CN104093386A (zh) 2014-10-08
CO7000760A2 (es) 2014-07-21
RU2014130213A (ru) 2016-02-20
WO2013092704A1 (fr) 2013-06-27

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